Power supply circuit for a gaseous discharge tube device

Details Power supply circuit for a gaseous discharge tube device Power supply circuit for a gaseous discharge tube device

1989-04-28

1990-11-13

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315224, 315DIG7, 315219, H05B 4129

Patent

active

049704397

ABSTRACT:
An improved power supply circuit for supplying power to intermittently energized loads, such as gaseous discharge tube devices. Such power supply has a transformer wherein current flow in the primary winding is controlled by a first semiconductor device that in turn is controlled by a second semiconductor device. A feedback circuit coupled to the primary winding provides a signal for turn-off of the first semiconductor device when its turn-off is initiated by the second semiconductor device. A circuit portion connected between the primary winding and the second semiconductor device provides a signal to the second semiconductor device when it initiates a turn-off of the first semiconductor device. Such signal continues operation of the second semiconductor device until the turn-off signal from the feedback circuit is effective to turn-off the first semiconductor device serving to reduce power dissipated in the first semiconductor device.

REFERENCES:
patent: 4027199 (1977-05-01), Johnson
patent: 4321507 (1982-03-01), Bosnak

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